The large-scale submerged-arc welding device of bend pipe butt welding
The utility model relates to welding technology field, especially a kind of large-scale submerged-arc welding device that is applicable to the bend pipe butt welding.
Major diameter bend pipe pipe fitting adopts two semicanal butt welding to form usually, and the bend pipe size is very big, and the pipe fitting diameter is 800～1600mm, and the radius of curvature of flexural center layer is 800～2400mm, wall thickness 8～26mm.The welding rod manual electric arc welding methods that adopt in the prior art need at least two people to cooperate completion more during work, people's turning of work piece, and another person welds.There is following problem in this artificial weld job: (1) requires very strictness to welder's operational capacity, and the Personal Skills directly determines the qualified situation of weld seam; (2) because the inhomogeneous and workpiece that workpiece rotates rocks, so the weld is accepted rate is low, qualification rate is merely about 50%; (3) because the workpiece volume is bigger, operating difficulties, operating personnel's physical demands is serious, and needs several groups of people to come cooperating in turn, and demand personnel are more, and the completion cycle of product is long, and manufacturing cost is high.
The utility model content
The applicant adopts welding rod manual electric arc welding welding to exist shortcomings such as efficient is low, of poor quality, cost height to above-mentioned existing major diameter bend pipe pipe fitting; A kind of large-scale submerged-arc welding device that is applicable to the butt welding of major diameter bend pipe is provided, thereby can accomplishes the butt welding operation in high-efficiency high-quality ground.
The technical scheme that the utility model adopted is following:
A kind of large-scale submerged-arc welding device of bend pipe butt welding comprises electroplating equipment wielding machine arm and clamping rotating-table apparatus two parts, and the vertical lifting pillar of said electroplating equipment wielding machine arm is arranged on the rotary table; Horizontal arm through slide block slippingly quadrature be arranged on the fluctuating orbit of vertical lifting pillar; Horizontal arm one end is provided with balancing weight, and the other end is provided with multiarticulate adjustable arm, at the anterior free end of adjustable arm; Be provided with welding gun and monitor, the welding rod of welding gun carries out automatic feed through the wire feed controller; The rotary disk of clamping rotating-table apparatus is center of circle revolution through motor-driven and with the center of rotation, the rotative speed scalable; On the card of rotary disk along radially being provided with pipe end gripper rail and pipe fitting supporting track; The pipe end gripper rail is provided with clamping fixture; The pipe fitting supporting track is provided with the bend pipe support fixture, and transfer arm and rotary disk are relative, and clamping also pushes against the outside of bend pipe workpiece.
Further improvement as technique scheme: said adjustable arm is hinged successively through pivot from beginning to end by the multistage galianconism; Adjusting through a plurality of joints is to realize the adjusting of the front end free degree; Be provided with the adjustable arm drive motors at stiff end; Chain is connected in turn on the sprocket wheel with each pivot coaxial rotation, is driven by motor and electromagnetic clutch.
Each section galianconism is connected on the balancing weight to keep the work balance of horizontal arm through traction steel wire.
The set inside of said clamping rotating-table apparatus has clutch, and outer setting has the shift action bars, can switch fast and two gears at a slow speed according to welding requirements.
The wire feed controller comprises that the welding rod of welding rod dish and driven by servomotor sends running roller to.
Some groups of pipe fitting supporting tracks are arranged between two groups of pipe end gripper rails, and said clamping fixture is tommyhead bolt and briquetting.
The transfer arm is arranged on the pedestal relative with rotary disk, and pedestal can front and back slippage on the parallel orbit of ground.
The beneficial effect of the utility model is following:
The utility model adopts the clamping rotating-table apparatus to carry out gripping of bend pipe workpiece, and drives the uniform rotation of bend pipe workpiece at work; Utilize the electroplating equipment wielding machine arm to control the position of solder joint, and carry out automatic weld job through the submerged-arc welding welding gun of mechanical arm front end through adjusting the adjustable arm node.The weld is accepted rate obviously improves, and uses after this equipment, and the weld is accepted rate generally remains on about 95%, far above original 50%.Operating efficiency obviously improves; Product shortening at delivery date: need five weld task that could accomplish working day only to need to accomplish a working day now originally; Because welding job belongs to key operation, so the delivery date of product has directly been shortened in its duration shortening.Reduced human cost, the use of this equipment only needs two people to cooperate and can easily accomplish, and has reduced human cost, has reduced operating personnel's workload.The utility model automaticity is high, and process time is short, and efficient is high, and welding quality is good, has reduced manufacturing cost effectively, has remarkable economic efficiency.
Description of drawings
Fig. 1 is the front view of the utility model.
Fig. 2 is the stereogram of the electroplating equipment wielding machine arm of the utility model.
Fig. 3 is the exploded perspective view of the clamping rotating-table apparatus of the utility model.
Fig. 4 is the bend pipe workpiece stereogram of the utility model.
Fig. 5 is the work sketch map of the periphery inwall weld seam of welding bend pipe pipe fitting, initial state.
The same Fig. 5 of Fig. 6 is intermediateness.
The same Fig. 5 of Fig. 7 is done state.
Fig. 8 is the work sketch map of the periphery outer wall weld seam of welding bend pipe pipe fitting, initial state.
Among the figure: 1, electroplating equipment wielding machine arm; 2, clamping rotating-table apparatus; 3, bend pipe workpiece; 11, rotary table; 12, vertical lifting pillar; 13, balancing weight; 14, horizontal arm; 15, adjustable arm; 16, wire feed controller; 17, welding gun; 18, monitor; 21, rotary disk; 22, center of rotation; 23, pipe end gripper rail; 24, pipe fitting supporting track; 25, shift action bars; 26, transfer arm; 27, pedestal; 28, parallel orbit; 29, briquetting; 31, semicanal; 32, semicanal; 33, outer arc weld joint on inner side; 34, the outer side weld of inner arc; 35, the outer side weld of outer arc; 36, inner arc weld joint on inner side; 41, adjustable arm drive motors; 42, galianconism; 43, pivot; 44, traction steel wire; 45, sprocket wheel; 46, chain.
The specific embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the utility model is described.
As shown in Figure 1, the described large-scale submerged-arc welding device of the utility model comprises electroplating equipment wielding machine arm 1 and clamping rotating-table apparatus 2 two parts, and wherein clamping rotating-table apparatus 2 carries out gripping of bend pipe workpiece 3, and drives 3 uniform rotation of bend pipe workpiece at work; And electroplating equipment wielding machine arm 1 is controlled the position of solder joint through adjusting adjustable arm 15 nodes, and carries out weld job through the submerged-arc welding welding gun 17 of mechanical arm front end.
As shown in Figure 2, the vertical lifting pillar 12 of electroplating equipment wielding machine arm 1 is arranged on the rotary table 11 vertically, horizontal arm 14 through slide block slippingly quadrature be arranged on the fluctuating orbit of vertical lifting pillar 12, carry out oscilaltion by lifting motor through chain.Horizontal arm 14 1 ends are provided with balancing weight 13, and the other end is provided with multiarticulate adjustable arm 15, and adjustable arm 15 is hinged successively through pivot 43 by multistage galianconism 42 head and the tail, the free degree that the adjusting through a plurality of joints can the free adjustment front end.The adjustable arm 15 of the utility model is made up of six sections galianconism 42; Be provided with adjustable arm drive motors 41 and electromagnetic clutch at stiff end; Chain 46 is connected in turn on the sprocket wheel 45 with each pivot 43 coaxial rotation, makes the electromagnetic clutch absorption work of response come to control respectively each section galianconism 42 by the output of motor through Node Controller and turns round driving.Simultaneously, each section galianconism 42 is connected on the balancing weight 13 through a traction steel wire 44, thereby keeps the work balance of horizontal arm 14.Anterior free end in adjustable arm 15; Be provided with welding gun 17 and monitor 18, the welding wire of welding gun 17 carries out automatic feed through wire feed controller 16, and wire feed controller 16 comprises that the welding wire of wire reel and driven by servomotor sends running roller to; The welding gun 17 of the utility model, monitor 18 are identical with existing submerged-arc welding equipment with wire feed controller 16; Adopt the equipment that dimensions is less, weight is lighter, thereby avoid the overweight unstable structure that loads on the cantilever beam front end, influence welding quality.The utility model is provided with up and down two groups of independently electroplating equipment wielding machine arms 1, thereby can improve weld job efficient.
As shown in Figure 3, the rotary disk 21 of clamping rotating-table apparatus 2 is that the center of circle is turned round slowly through motor-driven and with center of rotation 22, and motor drives through gearbox and can regulate rotative speed.The set inside of clamping rotating-table apparatus 2 has clutch, and outer setting has shift action bars 25, can switch fast and two gears at a slow speed according to welding requirements.Along radially being provided with the angle that becomes to be slightly larger than the right angle between 23, two groups of tracks of two groups of pipe end gripper rails, adopt tommyhead bolt and briquetting 29 that the tube wall of bend pipe workpiece 3 is clamped on the rotary disk 21 during work in orbit on the card of rotary disk 21.Between two groups of pipe end gripper rails 23, also be provided with the pipe fitting supporting track 24 that three groups of pipe fittings are radially arranged, be provided with the bend pipe support fixture in orbit.
As shown in Figure 3; The transfer arm 26 of clamping rotating-table apparatus 2 is arranged on the pedestal 27 relative with rotary disk 21; Pedestal 27 can be on the parallel orbit 28 of ground before and after slippage, the outside that cooperates cable clamp to clamp bend pipe workpiece 3, and bend pipe workpiece 3 pushed against on rotary disk 21.Need to prove, for better expression, among Fig. 3 pedestal 27 and rotary disk 21 separated and deflection certain angle, the accurate position when being not real work.
During real work; The bend pipe workpiece 3 of the required manufacturing of the utility model is as shown in Figure 4, by about two semicanals 31 and semicanal 32 splicing back welding, before carrying out clamping to clamping rotating-table apparatus 2; Adopt manual work and lifting appliance; With two semicanal contrapositions, and carry out spot welding at inside and outside arc weld place, thus with two semicanal integrators with easy to setup.
3 of the bend pipe workpiece of a postwelding are winched to rotary disk 21 front portions of clamping rotating-table apparatus 2; Utilize two groups of tommyhead bolt and briquettings 29 on the pipe end gripper rail 23 that the tube wall of bend pipe workpiece 3 is clamped on the rotary disk 21, and utilize the bend pipe support fixture on the pipe fitting supporting track 24 that the lateral wall of bend pipe workpiece 3 is supported.Simultaneously, utilize cable clamp on the transfer arm 26 to clamp the outside tube wall of bend pipe workpiece 3, and bend pipe workpiece 3 is pushed against on rotary disk 21.Should be noted that during clamping; Briquetting 29 for the clip position of bend pipe workpiece 3 apart from the distance between the center of rotation 22 of rotary disk 21; Be R as shown in fig. 1; Need be identical with the radius value of the flexural center arc of bend pipe workpiece 3, thus the coaxial rotation of bend pipe workpiece 3 guaranteed with rotary disk 21.During actual clamping, only need measure center of rotation 22, its flexural center arc radius that equals bend pipe workpiece 3 got final product, thereby made things convenient for clamping to the distance between the clamping point of briquetting 29.
When carrying out the submerged-arc welding welding, with reference to Fig. 4, the utility model welds according to the order of the outer side weld 35---inner arc weld joint on inner side 36 of the outer side weld 34---outer arc of outer arc weld joint on inner side 33---inner arc successively.Fig. 5 to Fig. 7 illustrates the welding process of the utility model for outer arc weld joint on inner side 33.
The initial state of welding is as shown in Figure 5, earlier rotary disk 21 is turned round, and the initial end face that makes bend pipe workpiece 3 is vertical state.Then through regulating the button in control room; Adjusting through each node on rotary table 11, vertical lifting pillar 12, horizontal arm 14 and the adjustable arm 15 is rotated; Thereby make adjustable arm 15 anterior free-ended welding guns 17 aim at the outer arc weld joint on inner side 33 of bend pipe workpiece 3; The shape that need to guarantee adjustable arm 15 this moment can not interfere situation with the bend pipe workpiece 3 of work turn state with the position, and the first artificial controlled system of needs carried out rotating simulation before welding, interferes avoiding.After confirming completion,, start automatic operating switch promptly like Fig. 6, shown in Figure 7; Rotary disk 21 carries out clockwise slow rotation; Submerged-arc welding welding gun 17 work simultaneously, wire feed controller 16 carries out the automatic feed of welding rod, thereby steadily evenly butt welded seam weld.Utilize 18 pairs of welding situation of monitor to monitor in real time in the welding process, can find in time that welding track departs from.
After this weld seam welding was accomplished, rotary disk 21 was reset to Fig. 5 position, and promptly the initial end face of bend pipe workpiece 3 still is vertical state, and the shape of regulating electroplating equipment wielding machine arm 1 then can be to the welding of inner arc outside weld seam 34.Therefore it should be noted that needs the angular velocity of rotation of control rotary disk 21 because the radius of inner arc and outer arc is different, perhaps switches gear through shift action bars 25, thereby guarantees the linear velocity of suitable weld job.In like manner, as shown in Figure 8, with rotary disk 21 rotations; Make bend pipe workpiece 3 be positioned at the top of rotary disk 21; Carry out the welding of the outer side weld 35 of outer arc and inner arc weld joint on inner side 36, fusion welding is positioned at the top of weld seam in the time of can guaranteeing to weld like this, can be stable solidify; And scolder is prone under the gravity effect, drop when avoiding reverse, influences welding quality.
The utility model adopts up and down two groups of independently electroplating equipment wielding machine arms 1, thereby in a debug process, promptly can carry out Interference Check simultaneously, has practiced thrift the time of debugging effectively, increases work efficiency.
More than describing is the explanation to the utility model; It or not qualification to utility model; The utility model institute restricted portion is referring to claim, and under the situation of the utility model spirit, the utility model can be done any type of modification; For example welding equipment is replaced by milling apparatus, also can carries out milled processed by butt welded seam.